A method of manufacturing a security device (10) for a security document. The method comprising: providing a substrate (20) having a face (30), the face including a plurality of first walls (50),each first wall (50) being orientated in a first direction and a plurality of second walls (60), each second wall (60) being orientated in a second, different direction; and directing a flow of particles to form a layer of material (70) on one of either (i) each of the plurality of first walls (50) or (ii) each of the plurality of second walls (60).
A security document (10) including a security device, and a method of manufacturing such a document. The document (10) includes a first fluorescent layer (130) which fluoresces in a first visible colour when exposed to ultraviolet light; a UV blocking layer (120) which is opaque to ultraviolet light, but transmits visible light; and a second fluorescent layer (110) which fluoresces in a second, different, visible colour when exposed to ultraviolet light. The second fluorescent layer (110) is part of a security transfer (50) which is affixed to the face of the security document substrate (20). The security transfer (50) has an inner face proximal to the security substrate (20) and an outer face distal to the security substrate. The second fluorescent layer (110) is closer to the outer face of the security transfer than either of the first fluorescent layer (130) or the UV blocking layer (120).
A security device for inclusion in pulp from which a security paper is manufactured, and a method of making such a security device. The device is arranged so as to form a windowed security thread in a security paper and comprises flexible substrate (10) having two surfaces (12, 14); a bonding layer (17) on at least part of one or both surfaces and a reflective or diffractive layer (16) on at least part of one or both surfaces, between the substrate and the bonding layer; wherein at least one surface of the device has one or more first regions in which the bonding layer is present and one or more second regions in which the bonding layer is not present.
A security device (1) for inclusion in pulp from which a security paper is manufactured, and a method of making such a security device. The device comprises a portion of planar flexible material (10) having a first surface (12) and a second surface (16), and at least one perforation (18) in the flexible material, the perforation extending between the first and second surfaces. The at least one surface of the device comprises at least one region which appears a first colour when viewed under a first set of viewing conditions and a second colour when viewed under a different set of viewing conditions, the second colour being different to the first colour.
A security paper (200) including a plurality of planchettes (100), each planchette (100) being a sheet having a first face and a second face, the first face having a first colour and the second face having a second, different, colour.
A security feature, for inclusion in a pulp from which a security paper (50) is to be made, is a sheet (10). The security feature includes a first pigment that fluoresces in response to illumination by UV light of a first, longer, wavelength, and a second, different, pigment that fluoresces in response to illumination by UV light of a second, shorter, wavelength. The sheet (10) is divided into a plurality of regions (20. The first pigment is in a first region, and the second pigment is in a second, different, region.
A security fibre (1; 51; 52), for use in counterfeit protection, is suitable for incorporation into a paper product. The security fibre (1; 51; 52) comprises (i) a coloured region (2), wherein the coloured region (2) is made up of a plurality of different colours (21; 22; 23; 24), and (ii) a margin (3; 31; 32; 33; 34) adjacent to the coloured region (2).
B42D 15/00 - Printed matter of special format or style not otherwise provided for
D21H 21/14 - Non-fibrous material added to the pulp, characterised by its function, form or propertiesPaper impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
D21H 21/40 - Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
B42D 15/10 - Identity, credit, cheque or like information-bearing cards (record carriers, e.g. credit or identity cards, for use with machines and with at least a part designed to carry digital markings G06K 19/00)
A device comprises a piezoelectric element (4) and an electrochromic element (6). The piezoelectric element (4) has an output adapted to provide a voltage in response to an activation of the piezoelectric element (4). The electrochromic element (6) has an input coupled to the output of said piezoelectric element (4). The electrochromic element (6) provides a visible output dependent on the output of said piezoelectric element (4). The device has a thickness of 60 microns or less.
B42D 15/00 - Printed matter of special format or style not otherwise provided for
B42D 15/10 - Identity, credit, cheque or like information-bearing cards (record carriers, e.g. credit or identity cards, for use with machines and with at least a part designed to carry digital markings G06K 19/00)
G02F 1/163 - Operation of electrochromic cells, e.g. electrodeposition cellsCircuit arrangements therefor
Planchettes (2, 2', 2', 2'', 10, 20) for inclusion in paper products (22), such as bank notes, are described. The planchettes (2, 2', 2', 2 '',10, 20) comprise one or more coloured regions that are visible only under ultra-violet light. The planchettes have shapes (2, 2', 2', 2'', 10, 20) that are complex or have features such as indentations, projections and lobes. In some forms, the planchettes (2, 2', 2', 2'', 10, 20) form multi-sided symbols, such as national symbols.
B42D 15/00 - Printed matter of special format or style not otherwise provided for
B42D 15/10 - Identity, credit, cheque or like information-bearing cards (record carriers, e.g. credit or identity cards, for use with machines and with at least a part designed to carry digital markings G06K 19/00)
D21H 21/48 - Elements suited for physical verification, e.g. by irradiation
10.
IMPROVEMENTS IN AND RELATING TO SECURITY DOCUMENTS.
A security document (10) including a security device, and a method of manufacturing such a document. The document (10) includes a first fluorescent layer (130) which fluoresces in a first visible colour when exposed to ultraviolet light; a UV blocking layer (120) which is opaque to ultraviolet light, but transmits visible light; and a second fluorescent layer (110) which fluoresces in a second, different, visible colour when exposed to ultraviolet light. The second fluorescent layer (110) is part of a security transfer (50) which is affixed to the face of the security document substrate (20). The security transfer (50) has an inner face proximal to the security substrate (20) and an outer face distal to the security substrate. The second fluorescent layer (110) is closer to the outer face of the security transfer than either of the first fluorescent layer (130) or the UV blocking layer (120).
patents
